Yobs have caused hundreds of thousands of pounds of needless damage to schools.
The astonishing bills are charted in a log obtained by the Paisley Daily Express.
In the past five years £540,000 has been spent on repairs to vandalised schools across Renfrewshire.
But in reality the total is much higher, as only schools maintained under public/private partnership deals break down the soaring costs.
Details in the malicious damage dossier reveal ongoing problems as water leaks are caused through vandalised roofs, fire extinguishers are set-off and scores of windows and doors broken.
The most expensive repair was £4,150 when a giant window at Gleniffer High in Paisley was broken deliberately.
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Blinds, flooring, magnetic door locks, a hairdryer and mirrors have been smashed.
And the vast majority of it is almost certainly caused by the pupils themselves.
Russell Findlay, Scottish Conservative West Scotland MSP and the Shadow Community Safety Minister, said: “The figures discovered by the Paisley Daily Express are shocking.
“Every pound spent on fixing mindless vandalism is a pound taken away from our children’s education.
“Accidental damage and wear and tear are inevitable, but this is an extensive catalogue of criminal damage.
“The small minority of young people responsible for it should be challenged and punished.
“I would urge the council’s education department to work with headteachers to explore ways in which vandalism can be curtailed.”
The council said the cost of vandalism at the schools it does look after directly are not available.
A spokeswoman said: “Our reporting systems do not record and cannot extract that level of cost breakdown in respect of what repairs were due to vandalism.”
But the schools run by private facilities firms do price the vandalism damage.
In one incident at Linwood High it cost more than £1,100 to fix a damaged basketball board.
The majority of the vandalism has been carried out at the area’s secondary schools, many of them modern buildings run on a public/private partnership basis.
St Andrew’s Academy in Paisley features heavily, with multiple incidents of doors being kicked in and blinds smashed and costing thousands of pounds.
It cost nearly £500 alone after a thermostat was pulled off the wall at St Andrew’s.
But there has also been continuing problems at a primary school, Fordbank in Johnstone.
At Fordbank there have been 12 incidents in the past five years. These include damage to walls, blinds and doors.
The full of array of trades from plumbers, plasterers and painters, to joiners and electricians have had to be brought in to make the repairs across the school estate.
In one incident maintenance reported: “Kids have shattered one big main window. It has temporarily been made safe with sheets of sticky plastic covering.”
And of another spot of vandalism, staff said: “The outside fire door at stair 1 has been damaged by kids.”
Paisley Grammar has also had continual problems with Georgian windows being smashed, doors damaged and vandalism to the plumbing.
No figures were available to fix the damage as it is directly run by Renfrewshire Council.
In East Renfrewshire more than £200,000 worth of damage has been caused by vandals in the last four years.
That included a £7,000 bill at Arthurlie Nursery in Barrhead to install metal shutters after windows were repeatedly smashed.
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